EarthPaws Litter Tray solution is here. 7-pack of recycled disposable litter boxes. These litter boxes can be used standalone or placed inside standard litter box enclosures. EarthPaws Litter Trays are stronger and thicker than our competition giving you a better experience caring for your furry friend. No more plastic liners and cleaning that plastic kitty litter box. EarthPaws provides a sustainable and hygienic alternative to traditional litter services. Replace on an as-needed basis or at a minimum, every 2 weeks.